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