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