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