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