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