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