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