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