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