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