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