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