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