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