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