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