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