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