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