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