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