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