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)(21,22)(23,29)(24,33)(25,27)(26,31)(28,30)(32,35)(34,36)(2,4)(14,17)(18,19)(21,23,30,36,25,32,24,31)(22,26,33,35,27,34,28,29)(1,2,3,4)(5,7,8,12)(6,9,10,11)(21,22)(23,26)(24,28)(25,27)(29,31)(30,33)(32,34)(35,36)(13,15,16,20)(14,18,17,19)(22,27)(26,34)(28,33)(29,35)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.