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