I have Cisco 3560E with software version of 12.2(37) SE. I am not getting options for configuring SSH.
Please let me know what should i look at to solve the issue ?
Oh, so your switch is 3560E, not the 3560 (there's a difference between those two).
Right, your current IOS is without crypto support. The latest IOS version supporting crypto operations for your switch is the 12.2(55)SE with the image name c3560e-universalk9-mz.122-55.SE.bin.
There are several ways to learn what is the current version of IOS for your device. One of them is visiting the Download Software page at http://www.cisco.com/cisco/web/download/index.html. Then proceed through the available selections to find your particular device and see the latest available IOS (or set of IOSes) for that device.
The second tool is the Cisco Feature Navigator tool available at http://cisco.com/go/fn. This tools lets you actually search among different IOSes depending on platform or required feature, or even compare two IOSes for their common and unique features.
Also you may be interested in reading the Release Notes for your switch that document changes, closed and open bugs, supported hardware and required upgrade procedures. You can find the Release Notes at http://www.cisco.com/en/US/products/ps7078/prod_release_notes_list.html.
Note that for the UNIVERSAL image, the image contains all available features that are offered for the 3560-E series, however, to unlock some of them, a license activation key will be required. It is possible that you already have the necessary features activated in which case they will remain active after an IOS upgrade. Nevertheless, I suggest reading more about the feature activation at http://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_50_se/configuration/note/swactivn.html.