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