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