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