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