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