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