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)(19,28)(20,30)(21,23)(24,31)(25,27)(29,32)(1,2,5,6)(3,7,4,8)(11,15)(13,16)(17,18)(19,29)(20,24)(21,25)(22,26)(23,27)(28,32)(30,31)(1,3,5,4)(2,7,6,8)(9,11,12,15)(10,13,14,16)(17,19,22,20)(18,24,26,29)(21,30,23,28)(25,32,27,31)(1,4,5,3)(2,7,6,8)(17,20,22,19)(18,24,26,29)(21,30,23,28)(25,31,27,32)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.