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