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