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