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