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