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