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