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