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