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