Caring for a Potted Salvia?

My stepson just gave me a huge potted salvia. I am a 101 gardener and the only salvias I have are a few small ones in a flower bed. Do I want to transfer this large potted salvia into a bed or continue re-potting?

Also, it is withering, I'm not sure how well it was cared for before it was given to me. What can I do to perk it up? (From the photo, it looks fairly lush, but underlying stems and blooms are in rough shape).

Thanks!

Hardiness Zone: 7a

By Kate D. from Albuquerque, NM