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