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