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