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