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