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