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