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