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