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