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