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