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