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