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