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