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