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