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