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