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