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