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