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