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