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