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