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