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