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