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