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