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