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