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