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