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