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)(11,12)(17,18)(19,24)(20,22)(21,23)(25,26)(27,32)(28,30)(29,31) involution — undirected(2,6)(3,7)(9,10)(11,15)(12,16)(13,14)(17,19)(18,20)(21,22)(23,24)(25,27,29,30)(26,28,31,32)(2,6)(4,8)(9,11,13,12)(10,15,14,16)(17,20,21,24)(18,22,23,19)(25,28,29,32)(26,30,31,27)(1,3,5,7)(2,4,6,8)(9,12,13,11)(10,15,14,16)(17,19)(18,20)(21,22)(23,24)(1,4)(2,7)(3,6)(5,8)(9,10)(11,16)(12,15)(13,14)(17,20)(18,19)(21,24)(22,23)(25,26)(27,28)(29,31)(30,32) 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.