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