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