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