According to my friends studying at BITS Pilani, you should go with CSE. As it has got quite higher packages and has a greater number of job opportunities.
There are many top companies that participate in the placement drives conducted by BITS Pilani. They include companies like Microsoft, Capgemini, Accenture, TCS, Cognizant, IBM, Mindtree, ZS Associates, HCL, HP, Morgan & Stanley, etc.
It is suggested that you go for CSE rather than electrical due to its huge demand and scope. But ultimately it is your decision to make.