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