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