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