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