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