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