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