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