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