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