One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(3,4) involution — undirected(5,6,8,12,9,11,17,19)(7,13,14,20,15,10,16,18)(21,22)(23,30)(24,28)(25,33)(26,29)(27,31)(32,35)(34,36)(5,7,9,15)(6,10,11,13)(8,16,17,14)(12,20,19,18)(21,23,26,32)(22,27,29,36)(24,31,25,34)(28,35,33,30)(21,24,26,25)(22,28,29,33)(23,31,32,34)(27,35,36,30)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.