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