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