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