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