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