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