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