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