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