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