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