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