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