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