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