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