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