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