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