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