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