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