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)(14,17)(18,20)(21,22,27,32)(23,34,25,36)(24,29,35,30)(26,33,28,31)(6,9)(10,12)(13,14)(15,18)(16,17)(19,20)(21,23,26,24,27,25,28,35)(22,29,31,34,32,30,33,36)(2,4)(5,7)(6,10)(8,11)(9,12)(14,17)(15,19)(21,24,27,35)(22,30,32,29)(23,28,25,26)(31,34,33,36)(7,11)(10,12)(13,15,16,19)(14,18,17,20)(21,25,26,35,27,23,28,24)(22,29,31,34,32,30,33,36)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.