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