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