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