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