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