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