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