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