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