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