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