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