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