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