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