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