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