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