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