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