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)(11,15)(12,14)(13,16)(17,18,23,27)(19,28,29,24)(20,21,25,31)(22,26,30,32)(1,2)(3,6)(4,7)(5,8)(17,19)(18,24)(20,30)(21,26)(22,25)(23,29)(27,28)(31,32) involution — undirected(9,10,12,14)(11,13,16,15)(19,29)(22,30)(24,28)(26,32)(9,10)(11,13)(12,14)(15,16)(17,20)(18,21)(19,30)(22,29)(23,25)(24,26)(27,31)(28,32) involution — undirected(1,3,5,4)(2,6,8,7)(9,11)(10,13)(12,16)(14,15)(17,21)(18,25)(19,26)(20,27)(22,24)(23,31)(28,30)(29,32)(1,4,5,3)(2,7,8,6)(17,22,23,30)(18,26,27,32)(19,20,29,25)(21,24,31,28)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.