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