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