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