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