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