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