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