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