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