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