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