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