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