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