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