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