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