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