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