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