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