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