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