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