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