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