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