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