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