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