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