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