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