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