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