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