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