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