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