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