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