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