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