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