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