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