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