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