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