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