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