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