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