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