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