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