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