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