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