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