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