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