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