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