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