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)(11,13)(12,14)(15,16)(17,18,23,21,22,25,20,26)(19,27,30,24,29,31,28,32)(1,3,4,7)(2,5,6,8)(9,10)(11,15)(12,14)(13,16)(17,19,22,29)(18,24,25,32)(20,30,23,28)(21,27,26,31)(2,6)(5,8)(9,11)(10,13)(12,16)(14,15)(17,20,22,23)(18,21,25,26)(19,28,29,30)(24,31,32,27)(11,16)(13,15)(17,21,23,25,22,26,20,18)(19,24,30,31,29,32,28,27)(10,14)(13,15)(18,25)(19,29)(21,26)(28,30) 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.