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