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