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