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