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