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