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