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