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