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