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