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)(17,18,23,26)(19,24,22,20)(21,25,31,32)(27,29,30,28)(33,34,39,43)(35,37,44,40)(36,41,46,48)(38,42,47,45)(1,3)(2,8)(4,11)(5,7)(6,10)(9,15)(12,14)(13,16)(17,19,23,22)(18,24,26,20)(21,27,31,30)(25,29,32,28)(33,35)(34,40)(36,38)(37,43)(39,44)(41,45)(42,48)(46,47)(2,6)(3,5)(4,12)(15,16)(17,20,23,24)(18,19,26,22)(21,29,31,28)(25,30,32,27)(33,36,39,46)(34,41,43,48)(35,38,44,47)(37,42,40,45)(1,4,7,12)(2,9,6,13)(3,11,5,14)(8,15,10,16)(17,20)(18,19)(21,29)(22,26)(23,24)(25,30)(27,32)(28,31)(33,37,39,40)(34,35,43,44)(36,45,46,42)(38,41,47,48)(1,5,7,3)(2,10,6,8)(4,11,12,14)(9,15,13,16)(17,21)(18,25)(19,27)(20,28)(22,30)(23,31)(24,29)(26,32)(33,36)(34,41)(35,38)(37,42)(39,46)(40,45)(43,48)(44,47)(1,6,7,2)(3,10,5,8)(4,13,12,9)(11,16,14,15)(17,22,23,19)(18,20,26,24)(21,30,31,27)(25,28,32,29)(33,38)(34,42)(35,36)(37,41)(39,47)(40,48)(43,45)(44,46)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.