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