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