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