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