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