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