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