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