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