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