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