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