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