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