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