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