One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,11)(3,9,4,13)(5,15,16,12)(6,14,8,10)(17,18,23,26,22,27,21,31)(19,28,29,25,20,24,30,32)(1,3,6,12,7,4,8,15)(2,5,10,9,11,16,14,13)(17,19,22,20)(18,24,27,28)(21,30,23,29)(25,26,32,31)(1,4,7,3)(2,9,11,13)(5,10,16,14)(6,15,8,12)(17,20,22,19)(18,25,27,32)(21,30,23,29)(24,26,28,31)(1,5,8,13,7,16,6,9)(2,4,14,12,11,3,10,15)(17,21,22,23)(18,26,27,31)(19,29,20,30)(24,25,28,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.