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