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