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