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