One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,7)(6,8)(9,10)(11,15)(12,14)(13,16)(17,18,21,19)(20,22,24,23)(25,26,28,30)(27,29,31,32)(9,11,14,13)(10,15,12,16)(18,19)(22,23)(27,31)(29,32)(1,3,6,5)(2,7,8,4)(9,11,14,13)(10,16,12,15)(17,19,21,18)(20,22,24,23)(25,27)(26,29)(28,31)(30,32)(1,4,6,7)(2,3,8,5)(9,12,14,10)(11,16,13,15)(1,5,6,3)(2,7,8,4)(9,13,14,11)(10,16,12,15)(17,20,21,24)(18,22,19,23)(25,26)(27,29)(28,30)(31,32)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.