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