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