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