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