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