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