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