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