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