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