Hi, Physical Education is a specialised category, so you will need to do a graduate degree in it and top it with a post graduate degree. Only then your market value will be high. As opposed to the last 20 years, recent times have seen an increase in popularity for a career in Physical Education. But you need to be a specialist. We can suggest you to do a Diploma since you have already completed your graduation, but in the long run, it will not be beneficial for you. If another candidate has a full fledged PE degree, then he/ she will be preferred. So go on, do your Bachelors or a Diploma, but remember to top it up with another specialization.
A few top colleges in India offering Physical Education courses include the Allahabad University, Banaras Hindu University, Indira Gandhi Institute of Physical Education and Sports Science, Lovely Professional University and University of Delhi. A few other institutes of equal popularity encompass the Alagappa University, Bangalore University, Kannur University, University of Kerala, Ranchi University, University of Lucknow, IASE University, University of Mumbai and Barkatullah University.