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