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