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