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