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