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