Hello Deelip,
To do so you need the XDE module (which is available in open source with Open CASCADE -
http://www.opencascade.com/products/occ/overview/compocc3/xde/). It translates not only geometry and topology
but also graphical attributes (colors, layers, names) and assemblies.
AFAIK there is some XDE sample (see its snaphot - http://www.opencascade.com/pub/demos/xde-snapshot.gif),
but it is provided with some special restrictions. I'll ask marketing and sales guys to contact you.
Best regards,
Commenter-1