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