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