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