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