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