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