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