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