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