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