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