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