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