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