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