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