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