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