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