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