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