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