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