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