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