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