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)(23,26)(24,32)(25,29)(27,30)(28,31)(33,34)(35,36)(5,7)(6,8)(9,12)(10,11)(13,15)(14,17)(16,20)(18,19)(21,23,25,31)(22,26,29,28)(24,30,33,36)(27,34,35,32)(5,8,10,9)(6,11,12,7)(15,20)(17,19)(21,24,31,36,25,33,23,30)(22,27,26,34,29,35,28,32)(5,9,10,8)(6,11,12,7)(14,18)(15,20)(21,24,23,30,25,33,31,36)(22,27,28,32,29,35,26,34)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.