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