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