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