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