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