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)(21,22,28,32)(23,29,25,30)(24,34,35,36)(26,31,27,33)(1,2)(3,4)(5,7)(6,11)(8,16)(9,18)(10,17)(12,19)(13,20)(14,15)(21,23)(22,29)(24,31)(25,28)(26,36)(27,34)(30,32)(33,35) involution — undirected(2,4)(5,8,10,9)(6,12,14,13)(7,16,17,18)(11,19,15,20)(21,24,26,29,28,35,27,30)(22,23,33,36,32,25,31,34)(5,8,10,9)(6,13,14,12)(7,16,17,18)(11,20,15,19)(21,25,28,23)(22,30,32,29)(24,31,35,33)(26,34,27,36)(2,4)(5,9,10,8)(6,13,14,12)(7,16,17,18)(11,19,15,20)(21,26,28,27)(22,31,32,33)(23,34,25,36)(24,29,35,30)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.