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