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