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