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