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