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