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)(13,14)(15,18)(16,17)(19,20)(21,22,27,31)(23,32,24,28)(25,34,35,29)(26,33,36,30)(7,11)(9,12)(13,15)(14,18)(16,19)(17,20)(21,23,27,24)(22,28,31,32)(25,30,35,33)(26,34,36,29)(5,6,8,10)(7,9,11,12)(13,15,17,20)(14,19,16,18)(21,24,27,23)(22,28,31,32)(25,33,35,30)(26,34,36,29)(1,2,3,4)(5,6)(7,9)(8,10)(11,12)(13,15)(14,19)(16,18)(17,20)(21,25,27,35)(22,29,31,34)(23,33,24,30)(26,28,36,32)(5,7)(6,9)(8,11)(10,12)(13,16,17,14)(15,18,20,19)(21,26,27,36)(22,30,31,33)(23,34,24,29)(25,28,35,32)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.