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