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