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