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