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