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