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