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