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