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)(11,15)(12,13)(14,16)(17,18,24,28)(19,25,29,26)(20,30,21,31)(22,27,23,32)(2,5)(6,8)(9,10)(11,14)(12,13)(15,16)(17,19)(18,25)(20,22)(21,23)(24,29)(26,28)(27,30)(31,32) involution — undirected(1,3,4,7)(2,6,5,8)(10,13)(14,15)(17,20,23,29,24,21,22,19)(18,26,27,30,28,25,32,31)(9,11,12,16)(10,14,13,15)(17,21,22,29,24,20,23,19)(18,25,32,30,28,26,27,31)(2,5)(6,8)(17,22,24,23)(18,27,28,32)(19,20,29,21)(25,30,26,31)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.