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