I have had T's show me by being consistent with session, being reliable, remembering what I say, taking my reactions and history into consideration when telling me things, reinforcing my knowledge-base in things that I actually do know but tend to forget... Other things are harder to qualify, like tone of voice and body language... It's not even necessarily care beyond doing their job well, but it fits the scope of the relationship.
Some T's I had have shown caring beyond the relationship of therapist, more along caring as a human being, but it's not somethinng I expect.