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