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