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