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)(21,22,26,29,27,24,25,35)(23,30,33,34,31,36,32,28)(5,6,9,12)(7,13,14,10)(8,17,16,11)(15,18,20,19)(21,23)(22,28)(24,34)(25,33)(26,32)(27,31)(29,36)(30,35)(2,4)(5,7)(6,10)(8,15)(9,14)(11,18)(12,13)(16,20)(17,19)(23,31)(28,34)(30,36)(32,33) involution — undirected(7,14)(10,13)(15,20)(18,19)(21,24,26,35,27,22,25,29)(23,30,33,34,31,36,32,28)(5,8,9,16)(6,11,12,17)(7,15,14,20)(10,18,13,19)(21,25,27,26)(22,29,24,35)(23,32,31,33)(28,30,34,36)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.