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