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