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