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