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