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