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