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