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