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