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