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