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