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