There are various job opportunity after graduation in every subject. You need to decide that in which sector you want to do the job.
You can apply for the private sector jobs of your field and government jobs for graduate candidates.
The government jobs opportunity offered to graduate candidates are:
Banking job
SSC
Railway
Defense
Civil services
teaching
Research
UPSC etc.
First, you need to have a decision if you are comfortable in a private sector job or in a government sector job.
For private sector jobs, you need to make a resume and appear for their recruitment process while government jobs can get through clearing the recruitment exams for different posts.
You need to study a lot to get this. Civil service job/Govt jobs is the best section you can go for. But after graduation career oriented study is the best thing. Bank sector and private sector also offers good career too.