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