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