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