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