One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,5,7,8)(12,16)(14,15)(18,22)(23,25)(24,29)(30,31)(33,34,38,37)(35,41,42,39)(36,44,45,40)(43,46,48,47)(3,7)(5,8)(9,10,13,11)(12,14,16,15)(20,28)(24,29)(26,32)(30,31)(34,37)(35,42)(40,44)(43,48)(1,3,4,7)(2,5,6,8)(9,11,13,10)(12,15,16,14)(17,18,21,22)(19,25,27,23)(20,24,28,29)(26,31,32,30)(33,35,38,42)(34,39,37,41)(36,43,45,48)(40,46,44,47)(1,2)(3,5)(4,6)(7,8)(9,12,13,16)(10,14,11,15)(17,19,21,27)(18,23,22,25)(20,26,28,32)(24,30,29,31)(33,36,38,45)(34,40,37,44)(35,43,42,48)(39,46,41,47)(1,2)(3,5)(4,6)(7,8)(17,20,21,28)(18,24,22,29)(19,26,27,32)(23,30,25,31)(33,37,38,34)(35,41,42,39)(36,40,45,44)(43,46,48,47)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.