No magic pixie dust that I can think of, but how about setting up some sort of drift fence around the area. I assume you have a fence anyway... one to keep unwanted children from getting into the skimmer basket. SO that's a good start. To keep salamanders from entering the pool area something solid needs to be put in place around the bottom of the fence. It can be fabric (even landscape fabric) or wood or whatever and should go under ground maybe 2 inches. If you use landscape fabric this could be quite easy to do and you could incorporate it into the landscaping around the pool.
If there is any landscaping inside the fence, check under the mulch and such and see if there are any little dudes hanging out there already. If so, gently transport them to the other side of the fence and encourage them to take up residence away from the big blue.
Good luck,
greg
