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