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