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