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)(21,22,26,30)(23,28,33,36)(24,34,32,27)(25,35,31,29)(6,9)(10,12)(13,15)(14,17)(16,19)(18,20)(21,23,31,24,26,33,25,32)(22,27,35,36,30,34,29,28)(1,2,3,4)(7,11)(10,12)(15,19)(17,20)(23,24)(25,31)(27,36)(28,34)(29,35)(32,33)(5,7,8,11)(6,10,9,12)(21,24,25,23,26,32,31,33)(22,28,29,34,30,36,35,27)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.