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