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