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