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