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