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