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