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