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