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