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