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