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