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