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