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