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