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