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)(21,22,28,25,27,31,26,32)(23,30,36,29,24,34,33,35)(7,13)(8,16)(10,17)(11,15)(21,23)(22,29)(24,27)(25,30)(26,36)(28,33)(31,35)(32,34) involution — undirected(1,2,3,4)(5,7,9,13)(6,10,12,17)(8,14,16,19)(11,18,15,20)(21,24,27,23)(22,30,31,34)(25,29,32,35)(26,36,28,33)(7,13)(10,17)(14,19)(18,20)(21,25,26,22,27,32,28,31)(23,29,33,30,24,35,36,34)(5,8,9,16)(6,11,12,15)(7,14,13,19)(10,18,17,20)(22,31)(23,24)(25,32)(33,36)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.