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