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