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)(11,14)(12,13)(15,16)(17,18,22,26)(19,23,20,24)(21,25,28,31)(27,30,29,32)(1,3,4,8)(2,5,6,7)(19,27)(20,29)(21,28)(23,30)(24,32)(25,31)(10,13)(14,16)(17,19,28,29,22,20,21,27)(18,23,31,32,26,24,25,30)(17,20,21,29,22,19,28,27)(18,24,25,32,26,23,31,30)(9,11,12,15)(10,14,13,16)(19,20)(23,24)(27,29)(30,32)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.