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