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