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