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