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