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