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