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