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