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