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