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