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)(17,18,23,26)(19,24,30,32)(20,25,28,29)(21,31,27,22)(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)(18,24)(20,21)(22,29)(23,30)(25,31)(26,32)(27,28)(17,20)(18,25)(19,27)(21,30)(22,24)(23,28)(26,29)(31,32)(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)(18,25)(19,21)(22,32)(23,28)(24,31)(26,29)(27,30)(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)(17,21)(18,22)(19,28)(20,30)(23,27)(24,25)(26,31)(29,32)(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)(17,22)(18,21)(19,29)(20,24)(23,31)(25,30)(26,27)(28,32)(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.