If you are looking for campus kind of recruitment from Government organization then there are none or never will be from any of Central or State Government organizations, although Semi government organizations do that.
To find those jobs, browse through weekly addition of Employment News (Rozgar Samachar) where government (State and Central) place there advertisements for the requirements of Computer Science Graduates.
Some of the common places where Govt need computer science graduates are Bank (SBI), Public Fund Maintenance, Railways, Constructions, Any Automation of work for Govt Offices, along with software’s for Army, Navy and Airforce etc. So almost every cases where, software development or maintenance is needed and they have vacancy for that particular position(s).