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