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