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)(17,20)(18,19)(21,22,25,28)(23,29,31,26)(24,32,33,27)(30,34,36,35)(5,6)(7,10)(8,9)(11,12)(13,15)(14,18)(16,20)(17,19)(21,22,25,28)(23,26,31,29)(24,27,33,32)(30,34,36,35)(5,6)(7,12)(8,9)(10,11)(13,16,17,18)(14,19,20,15)(21,23)(22,26)(24,30)(25,31)(27,34)(28,29)(32,35)(33,36)(1,2,3,4)(5,6)(7,12)(8,9)(10,11)(13,15)(14,16)(17,19)(18,20)(21,22)(23,26)(24,27)(25,28)(29,31)(30,34)(32,33)(35,36)(5,7,8,11)(6,10,9,12)(13,16)(14,19)(15,20)(17,18)(21,24,25,33)(22,27,28,32)(23,30,31,36)(26,34,29,35)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.