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