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