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