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