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