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