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