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