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