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