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