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