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