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