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