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