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