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