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)(11,14)(12,13)(15,16)(1,3,5,4)(2,6,8,7)(17,18)(19,27)(20,25)(21,23)(22,26)(24,28)(29,31)(30,32)(1,3,5,4)(2,7,8,6)(10,13)(14,16)(18,23)(20,21)(24,27)(25,26)(28,30)(31,32)(1,4,5,3)(2,6,8,7)(17,19,22,29)(18,24,26,32)(20,28,21,30)(23,27,25,31)(9,11,12,15)(10,14,13,16)(17,20,22,21)(18,25,26,23)(19,28,29,30)(24,31,32,27)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.