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)(8,21,24,27)(9,12,10,15)(13,25,28,18)(14,23,30,22)(19,33,34,29)(31,35,36,32)(6,12,16,15)(7,18,20,25)(13,28)(14,27,30,21)(17,26)(19,32,34,35)(29,33)(31,36)(5,7)(6,13)(8,19)(9,18)(10,25)(11,20)(12,26)(14,29)(15,17)(16,28)(21,31)(22,32)(23,35)(24,34)(27,36)(30,33) involution — undirected(1,3,4,2)(5,8,10,23,11,24,9,22)(6,14,12,27,16,30,15,21)(7,19,25,35,20,34,18,32)(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.