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