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