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