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