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