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