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