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