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)(11,14)(12,16)(13,15)(17,18,21,24)(19,23,29,30)(20,25,31,27)(22,26,32,28)(1,3,5,4)(2,6,8,7)(9,11,13,12)(10,14,15,16)(17,19,21,29)(18,23,24,30)(20,28,31,26)(22,27,32,25)(1,3,5,4)(2,7,8,6)(10,15)(14,16)(18,24)(19,27)(20,30)(22,32)(23,31)(25,29)(9,12,13,11)(10,16,15,14)(17,20,21,31)(18,25,24,27)(19,28,29,26)(22,30,32,23)(1,4,5,3)(2,6,8,7)(19,25)(20,30)(22,32)(23,31)(26,28)(27,29)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.