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