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