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