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