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