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