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