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