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