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