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