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