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