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