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