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