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