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