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