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