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