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