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)(21,22,27,31)(23,32,34,35)(24,29,28,36)(25,30,26,33)(5,7)(6,10)(8,15)(9,13)(11,19)(12,17)(14,16)(18,20)(21,23,25,36,27,34,26,29)(22,28,33,35,31,24,30,32)(2,4)(7,13)(10,17)(14,15)(18,19)(21,24)(22,29)(23,33)(25,32)(26,35)(27,28)(30,34)(31,36) involution — undirected(5,8,9,16)(6,11,12,20)(7,14,13,15)(10,18,17,19)(21,25,27,26)(22,30,31,33)(23,29,34,36)(24,32,28,35)(6,12)(10,17)(11,20)(18,19)(22,31)(24,28)(30,33)(32,35) 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.