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