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)(17,18,22,26)(19,23,28,31)(20,24,29,32)(21,25,27,30)(1,2)(3,6)(4,5)(7,8)(9,11,12,15)(10,13,14,16)(17,19)(18,23)(20,27)(21,29)(22,28)(24,30)(25,32)(26,31)(10,14)(13,16)(17,19,27,29,22,28,21,20)(18,23,30,32,26,31,25,24)(1,3,4,7)(2,6,5,8)(2,5)(6,8)(17,20,27,19,22,29,21,28)(18,24,30,23,26,32,25,31)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.