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