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)(11,13)(12,15)(14,16)(17,18,23,26)(19,27,24,20)(21,25,31,22)(28,32,30,29)(1,3,5,7)(2,6,8,4)(9,10,14,16)(11,13,15,12)(17,19,23,24)(18,20,26,27)(21,30,31,28)(22,29,25,32)(1,2,5,8)(3,6,7,4)(9,11,14,15)(10,12,16,13)(21,31)(22,25)(28,30)(29,32)(1,2,5,8)(3,4,7,6)(9,12,14,13)(10,11,16,15)(17,20,23,27)(18,24,26,19)(21,32,31,29)(22,30,25,28)(1,2)(3,6)(4,7)(5,8)(9,10)(11,12)(13,15)(14,16)(17,21)(18,25)(19,28)(20,29)(22,26)(23,31)(24,30)(27,32) involution — undirected(1,4,5,6)(2,7,8,3)(9,13,14,12)(10,15,16,11)(17,22,23,25)(18,21,26,31)(19,29,24,32)(20,30,27,28)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.