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