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