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