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