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