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