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