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