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