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