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