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