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