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