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