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