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