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