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