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