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