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