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