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