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