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