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