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