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