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