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