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