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