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