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