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