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