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