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