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