Hey! Well, if you are pursuing your graduation from a good institution offering good placements, and have a great CV, a job would not be an issue. Your next concern is about continuing with a job or pursuing a PG Diploma. See, a Masters degree will definitely give a push to your VC and to your career. Some jobs require candidates to have a UG degree, while some want candidates with a Masters degree. It depends on your career goals basically. If you have found your dream job continue with it and grow along. Also, for better job prospects, you can go for a PG Diploma, as it is more about a specialisation in a certain study area, giving an edge to your knowledge base.

Yes you can get ample of job opportunities if you have got great skills and great resume alongwith some internship experience.
However, if you want to take off your career I sincerely recommend you to take up MBA in Media management from MICA Ahmedabad for which you need to aopear for MICAT exam.
Top companies to recruit here are Ogilvy mather, JWT, Reliance networks, DDB mUdra, Mindshare, Lowe Lintas, Publicis Omnicom, Balaji telefilms, Vodafone, etc with Average Package of 10lakhs oer annum.