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