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