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