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