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