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