E Way Bill

E-way bill has to be generated. It can be generated by either Vendor or Client. 

Thank you.. Do I have to keep any record if the vendor is preparing the eway bill

Yes Sir. Either You or your Vendor have to Generate E-way Bill if the Consignment Value exceeds ₹50,000. Your Case is a case of BILL-TO-SHIP-TO Model. So either You or your Vendor can generate an E-way Bill keeping in mind that the details in column- Bill To and Ship To will be different.

And as far as the maintenance of Records are concerned you must possess your Suppliers Invoice inorder to claim ITC...

(Errors if any, is highly Regrettable).

Yes, Agree with Mr. Shivam,  your case Bill to ship to model. 

Is eway bill required for job work irrespective of value

Yes. For Job works eway bill is reuired for inter state irrespective of value. 

But in case of intra state? Is it also applicable?

If your state has made mandatory generation of eway bill, then yes otherwise for intera state eways bill is optional.