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