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)(23,29)(27,30)(31,35)(34,36)(5,6,11,12)(7,15,8,13)(9,14,20,10)(16,17,18,19)(21,22,26,24)(23,27,29,30)(25,28,33,32)(31,34,35,36)(5,7,11,8)(6,13,12,15)(9,16,20,18)(10,17,14,19)(21,23)(22,27)(24,30)(25,31)(26,29)(28,34)(32,36)(33,35)(5,8,11,7)(6,13,12,15)(9,16,20,18)(10,19,14,17)(21,24,26,22)(23,30,29,27)(25,28,33,32)(31,34,35,36)(1,3,4,2)(5,9)(6,14)(7,16)(8,18)(10,12)(11,20)(13,19)(15,17)(21,25)(22,28)(23,31)(24,32)(26,33)(27,34)(29,35)(30,36)(5,10,11,14)(6,9,12,20)(7,17,8,19)(13,16,15,18)(21,23)(22,27)(24,30)(25,31)(26,29)(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.