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