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