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