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