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