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