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