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