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