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