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