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