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