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