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