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