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