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