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