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