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