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