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