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