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