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